package cn.tj212.xiaoyin.opt.business.impl;

import cn.tj212.xiaoyin.opt.business.ICourseBusiness;
import cn.tj212.xiaoyin.opt.vo.CourseSectionVO;

import java.util.List;

public class CourseBusinessImpl implements ICourseBusiness {
    @Override
    public List<CourseSectionVO> queryCourseSection(Long courseId) {
        return null;
    }
}
